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Lab talk, the good, the bad, and the ugly
Dental-CAM
The best 3D printer for plastic models
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<blockquote data-quote="TECHARTISAN" data-source="post: 84812" data-attributes="member: 1289"><p>Formlabs <a href="http://www.kickstarter.com/profile/formlabs/comments" target="_blank">"The thinnest wall the form-1 will print is 300 microns."</a> October 3.</p><p></p><p> In a DLP printer like the b9creator that just wrapped up its kickstart, or envisiontek, the magnification of the projector defines a pixel size so focusing at 100, 50, 20, 10, Ive even seen a .5 micron implementation....finer resolutions come with the tradeoff of smaller build areas due to the total number of mirrors in the dmd chip....larger resolutions come with a certain level of pixelization in x an y. </p><p> </p><p>In contrast, because their printer, Formlabs, uses beam steering it is possible to attain its very smooth surfaces along the path of beam movement. It is possible to keep this sweep resolution high over a much larger area than a DLP based system with no stage translation. However high the sweep resolution, which is determined by the accuracy of the galvos steering the beam this sort of printer is limited in feature size and minimum wall thickness by the diameter of the laser being used. A bit faster, a material with a finer potential z axis resolution is all this technology has over makerbots, reprap, stratasys etc....and that comes at a significant increase in both machine and material pricing.</p></blockquote><p></p>
[QUOTE="TECHARTISAN, post: 84812, member: 1289"] Formlabs [URL="http://www.kickstarter.com/profile/formlabs/comments"]"The thinnest wall the form-1 will print is 300 microns."[/URL] October 3. In a DLP printer like the b9creator that just wrapped up its kickstart, or envisiontek, the magnification of the projector defines a pixel size so focusing at 100, 50, 20, 10, Ive even seen a .5 micron implementation....finer resolutions come with the tradeoff of smaller build areas due to the total number of mirrors in the dmd chip....larger resolutions come with a certain level of pixelization in x an y. In contrast, because their printer, Formlabs, uses beam steering it is possible to attain its very smooth surfaces along the path of beam movement. It is possible to keep this sweep resolution high over a much larger area than a DLP based system with no stage translation. However high the sweep resolution, which is determined by the accuracy of the galvos steering the beam this sort of printer is limited in feature size and minimum wall thickness by the diameter of the laser being used. A bit faster, a material with a finer potential z axis resolution is all this technology has over makerbots, reprap, stratasys etc....and that comes at a significant increase in both machine and material pricing. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Dental-CAM
The best 3D printer for plastic models
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